The power flickers, the fridge goes quiet, and your neighbors are lighting candles. You? You barely notice, because your whole home just switched to battery in a fraction of a second.
EcoFlow Delta Pro Ultra — Top Pick
For the highest ceiling, true 7,200W 120/240V power, and expansion toward ~90kWh with automated whole-home switchover, the Delta Pro Ultra is the most capable system here. It costs the most, but it does everything.
In a hurry? That's our pick. Want the reasoning and the full comparison? Keep reading.
You want a battery system that runs your actual house, not a camping cooler that limps along with a single space heater. That means real numbers: kilowatt-hours of storage, 120/240V split-phase output, how far you can expand, and how fast it recharges when the sun comes back. The EcoFlow Delta Pro Ultra and the Anker Solix F3800 are the two flagship names people keep pitting against each other, and for good reason.
You are here to pick one and move on with your life. So we put both head-to-head, then added two strong rivals (the Bluetti AC500 and the Jackery Explorer 5000 Plus) so you can see where each one actually shines. Below you get the specs that matter, honest pros and cons, and a clear call on who each system is for. Prices shift constantly, so we point you to check the current price rather than quote a number that goes stale by lunchtime.
Key Takeaways
- EcoFlow Delta Pro Ultra is our top pick: ~6,144Wh per unit, 7,200W of true 120/240V power, and a ceiling that stretches to about 90kWh with the Smart Home Panel.
- Anker Solix F3800 is the value champ: native 6,000W 240V output out of the box at the lowest entry price of the true whole-home crowd.
- Bluetti AC500 + B300S gives you the most flexible expansion per dollar, letting you buy capacity in smaller, cheaper steps.
- Jackery Explorer 5000 Plus is the simplest big single unit: ~5,040Wh and native 240V without a complicated stack.
- Whole-home use means you will also budget for a transfer switch or smart panel, so factor install into your total, not just the battery price.
The Specs That Actually Decide This
Ignore the marketing photos for a second and look at four numbers. Capacity in watt-hours (Wh) tells you how long you can run. Continuous output in watts (W) tells you how much you can run at once. The 120/240V split-phase question tells you whether you can power a well pump, an electric dryer, or a central AC unit, because those need 240V and a lot of cheaper units simply cannot deliver it. Recharge speed tells you how fast you are back to full when the grid or the sun returns.
The EcoFlow Delta Pro Ultra leads on raw ceiling. One unit holds about 6,144Wh and pushes 7,200W of true 120/240V power, and you can stack it all the way to roughly 90kWh through the EcoFlow Smart Home Panel. That is genuine whole-home territory, the kind of system that runs your fridge, your well pump, and your AC through a multi-day outage. It also recharges fast, roughly a couple of hours from empty under favorable conditions, which matters more than people expect when you are stringing together cloudy days.
The Anker Solix F3800 answers with the smartest value play in the category. Out of the box it delivers 6,000W of native 240V, so you get whole-home-capable output without buying a second unit just to unlock high-voltage appliances. At ~3,840Wh per unit and expansion to about 26.9kWh, it covers most real households while costing noticeably less to get started. If you have watched a whole-home solar generator buying guide and felt sticker shock, the F3800 is where that shock eases.
Expandability and Install: The Part People Underestimate
A battery is only half the system. To actually back up your house, you tie the unit into your panel through a transfer switch or a smart panel, and that install cost belongs in your budget from day one. EcoFlow leans into this with its Smart Home Panel, which manages circuits automatically and makes the switchover invisible. It costs more, but it turns a pile of batteries into a real home backup system that behaves like a whole-home solar generator setup should.
Bluetti takes the opposite, wallet-friendly approach. The AC500 pairs with B300S battery modules, giving you about 4,960Wh at the base and room to grow to roughly 24.5kWh. The magic is that you buy capacity in smaller, cheaper increments instead of one giant purchase, which is why it wins on expandability per dollar. Its 5,000W continuous (10,000W surge) output handles heavy startup loads well, though its native high-voltage story is less clean than the F3800's.
Jackery keeps things refreshingly simple. The Explorer 5000 Plus packs about 5,040Wh and 7,200W of native 240V into one large unit, so you skip the stacking puzzle entirely. You still pair it with a transfer switch for home backup, but you are managing one box, not a tower. If the idea of building a modular battery wall makes your eyes glaze over, that simplicity is worth a lot.
Recharge, Warranty, and Living With It Day to Day
Recharge speed quietly decides how a system feels over a long outage. The EcoFlow Delta Pro Ultra is the standout here, refilling in roughly two hours under good conditions, which keeps you topped up between grid blips and solar windows. The others recharge respectably but generally take longer, so if you live somewhere with short, frequent outages, fast recharge earns its keep.
All four brands back their systems with multi-year warranties and modern LiFePO4 (lithium iron phosphate) cells rated for thousands of cycles, so you are looking at a decade-plus of service in normal use. Warranty terms shift, so confirm current coverage before you buy. The bigger day-to-day differences are app quality, noise, and how gracefully each handles the automatic switchover, and here EcoFlow and Anker both feel the most polished.
Quick Comparison
| Product | Capacity | 240V Output | Max Expansion | Best For |
|---|---|---|---|---|
| EcoFlow Delta Pro Ultra | ~6,144Wh/unit | 7,200W 120/240V | ~90kWh | Highest ceiling overall |
| Anker Solix F3800 | ~3,840Wh/unit | 6,000W native 240V | ~26.9kWh | Best value entry |
| Bluetti AC500 + B300S | ~4,960Wh base | 5,000W (10,000W surge) | ~24.5kWh | Cheapest expansion steps |
| Jackery Explorer 5000 Plus | ~5,040Wh | 7,200W native 240V | Single big unit | Simple large single unit |
1. Delta Pro Ultra — Best Overall
EcoFlow Delta Pro Ultra
If you want the highest ceiling money can buy and a backup that truly runs your whole house, this is the one. A single unit already delivers 7,200W of real 120/240V power and about 6,144Wh, and the Smart Home Panel lets you scale toward roughly 90kWh as your needs grow. Nothing else in this lineup reaches that high.
Fast recharge and slick automatic switchover make it feel effortless during outages. It is the priciest way in, especially once you add the Smart Home Panel, but you are paying for the most capable whole-home system here. Check the current price before you commit, since EcoFlow bundles change often.
Pros
- Highest expansion ceiling in the group (~90kWh)
- True 7,200W 120/240V output for demanding appliances
- Very fast recharge, roughly two hours in good conditions
- Smart Home Panel automates whole-home switchover
- Polished app and monitoring experience
Cons
- Highest total cost, especially with the Smart Home Panel
- Full setup is heavy and involves professional install
- Overkill if you only need to back up a few circuits
2. Solix F3800 — Best Value
Anker Solix F3800
The F3800 is the smartest way to get true 240V whole-home output without the flagship price. Out of the box it delivers 6,000W of native 240V, so you can run a dryer, well pump, or central AC without stacking a second unit first. That native high-voltage output at this price is the headline.
At ~3,840Wh per unit and expansion to about 26.9kWh, it covers most households comfortably. It does not reach EcoFlow's stratospheric ceiling, but most people never need that. If value is your top filter, start here and check the current price.
Pros
- Native 6,000W 240V output straight out of the box
- Lowest entry price among true whole-home units
- Expands to ~26.9kWh for larger needs
- Strong Anker build quality and support network
- Great fit for typical single-family homes
Cons
- Lower per-unit capacity than the flagship rivals
- Expansion ceiling well below the Delta Pro Ultra
- Still needs a transfer switch or smart panel for home backup
3. AC500 — Best Expandability
Bluetti AC500 + B300S
The AC500 wins if you want to grow your system in affordable steps rather than one giant purchase. It pairs with B300S modules for about 4,960Wh at the base and up to roughly 24.5kWh total, and each module you add is a manageable expense. That makes it the friendliest path for a phased buildout.
Its 5,000W continuous output with a 10,000W surge handles tough startup loads like pumps and compressors. The trade-off is a less clean native high-voltage story than the F3800, so plan your 240V needs carefully. Check the current price on the base plus the modules you actually need.
Pros
- Best expandability per dollar with modular B300S packs
- Strong 10,000W surge for heavy startup loads
- Buy capacity gradually instead of all at once
- Solid app and monitoring tools
- Good value once fully expanded
Cons
- Native 240V setup is less straightforward than rivals
- Base output lower than EcoFlow and Jackery
- Full stack gets physically bulky
4. Explorer 5000 Plus — Best Single Unit
Jackery Explorer 5000 Plus
If a modular battery tower sounds like a headache, the Explorer 5000 Plus is your answer. It packs about 5,040Wh and 7,200W of native 240V into one large unit, so you get serious power without stacking parts or planning an expansion path. One box, one purchase, done.
You still pair it with a transfer switch for whole-home backup, but the day-to-day mental overhead is minimal. It is the pick for someone who values simplicity over squeezing out the last kilowatt-hour of capacity. Check the current price and match it to your peak load.
Pros
- Big ~5,040Wh capacity in a single simple unit
- Native 7,200W 240V without stacking
- No expansion planning or module math needed
- Strong brand reliability and support
- Clean, approachable setup for newcomers
Cons
- Limited expansion compared to modular rivals
- One large unit is heavy to move and place
- Less flexible if your needs grow later
Which Should You Choose?
Choose the EcoFlow Delta Pro Ultra if you want the highest ceiling
You have a larger home, demanding 240V appliances, and you want a system that can grow toward roughly 90kWh with automated switchover. The Delta Pro Ultra costs the most, but it is the most capable whole-home setup here and the fast recharge makes long outages far less stressful.
Choose the Anker Solix F3800 if value drives your decision
You want true native 240V output for a typical household without paying flagship money. The F3800 gives you 6,000W of native 240V out of the box and sensible expansion to ~26.9kWh, making it the best-balanced entry point for most people.
Choose Bluetti or Jackery for a specific style
Pick the Bluetti AC500 if you want to expand in small, affordable steps over time. Pick the Jackery Explorer 5000 Plus if you would rather buy one big simple unit and skip the modular planning entirely.
Ready to power your home through anything?
Match the system to your load, budget for the transfer switch, and lock in your setup before the next outage catches you off guard. Check the current price on our top pick and take the free scan to size your needs.
Take the Free Emergency Readiness ScanFrequently Asked Questions
Yes, when sized and installed correctly. The EcoFlow Delta Pro Ultra, Anker F3800, and Jackery 5000 Plus all deliver 240V output needed for large appliances. You tie them into your panel with a transfer switch or smart panel, then match capacity and output to your home's actual load.
Many essential appliances (well pumps, electric dryers, central AC) run on 240V. A unit that only outputs 120V cannot power them at all. Every system in this comparison can deliver 240V, which is what makes them true whole-home candidates rather than large power stations.
It depends on capacity versus your draw. As a rough guide, a fridge, lights, and some electronics might pull a few hundred watts continuously, so a ~5,000Wh unit could run those essentials for many hours to over a day. Add solar input and you can stretch that indefinitely in good weather.
For simple plug-in loads, no. For true whole-home backup through your electrical panel, yes, you should use a licensed electrician to add a transfer switch or smart panel. Budget for that install alongside the battery, since it is part of the real total cost.
The Anker Solix F3800 is the value winner because it delivers native 6,000W 240V output at the lowest entry price in this group. If you want to phase your spending instead, the Bluetti AC500 lets you add capacity in cheaper steps over time. Check the current price on each to compare.